Automatic ejector control.



G. L. KOTHNY ,61 R. SUCZEK. AUTOMATIC HECTOR CONTROL. APPLICATION HLEDrun. 23. lane.

Patented Sept. 25, 1917.

vNiTED TES T OFFICE.

GOTTDANKJI. K OTHNY AND ROBERT SUCZEK, OFZPHILADELPHIA, PENNSYLVANIA,ASSIGNOR'S! C. H. WHEELER MANUFACTURING COMPANY, OF PHILADELPHIA,PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

AUTOMATIC EJECTOB CONTROL.

Specification of Letters Patent.

Patented Sept. 25, 1917.

Application filed March 23,1916. Serial No. 86,075.

To all whom it may concern:

Be it known that we, GOTTDANK L. KOTHNY and ROBERT SUCZEK, subjects ofthe Emperor of Austria-Hungary, residing at Philadelphia, county ofPhiladelphia, State of Pennsylvania, have invented new and usefulImprovements in Automatic Ejector Controls, of which the following is aspecification.

Qur invention relates to vacuum produte ing apparatus which isautomatically controlled with respect to the supply of motive fluid orits pressure, utilized, as in ejector apparatus, for producing ormaintaining a vacuum. I

It is the object of our invention to provide a system wherein an ejectoris employed for producing or maintaining a vacuum, as ina. steamcondenser or other device, and wherein exhaust or live steam, or motivefluids of different kinds or pressures, may be employed in the ejectortogether with an automatic control which shall insure the ejectorreceiving sufficient of either of the motive fluids independently ofvariations in the supply or pressure of at least. one of them.

For an illustration of some of the forms our invention may take,reference is to be had in the accompanying drawing, in which Figure 1 isan illustration of {system embodying one formv of our invention.v

Fig. 2 1s a sectional view, some parts in elevation, ofthe'automatically controlled valves.

Fig. 3 is an illustration of an embodiment of our invention when appliedto a jet con denser. V

In Fig. l, 0 represents a steam condenser, such as a surface condenser,having the exhaust steam inlet a and the tubes 6, only a portion ofwhich is shown, which conduct the cooling water which is deliveredthereto through the pipe 0 fromthe centrifugal or other pump I. Thecondensed steam or condensate collects in the bottom of the condenser Cand is conducted through pipe d to the condensate pump P and deliveredthereby to any suitable point. through the pipe 0. The pumps P and P areshown as having a common shaft driven by a steam engine or motor, suchas a steam turbine T. Steam for driving the turbine T is deliveredthrough the pipe 7" controlled by the valve y.

The exhaust steam from the turbine 'l is delivered into the pipe 71,which is provided with the relief valve 5 which, when the pressure ofexhaust steam in the pipe it exceeds a predetermined value, opens andallows escape thereof to atmosphere, to the boiler feed water heater, orto any other place or device. Ordinarily, however, the exhaust steamwill pass through the pipe h and through the swinging check valve j intothe pipe Z, controlled by ordinary hand valve m, to the ejector E havingthe chamber n into which projects the expansion nozzle 0 receiving thesteam from pipe 11. The chamher a also communicates by passage 7)beneath the hallle I with the steam space of the condenser (J to extracttherefrom the air or other gases or fluid to maintain the desired vacuumtherein. The steam issuing thr ugh the nozzle n entrains the air or gasand 1e mixture is delivered through the ejector diffuser 9 through thepipe 8.

It is desirable to always maintain a higln vacuum in the condenser C andit is there fore important that the ejector E is supplied at all timeswith sufficient steam or motive fluid.

It frequently occurs, however, that the amount of exhaust steamavailable from the turhineT, as when the load upon the {turbine '1decreases, is insuflicient to maintain the proper vacuum. through theagency of the ejector E, within the condenser C. In such case other oradditional steam is automatically supplied to the ejector E so that itmay maintain the proper vacuum in the condenser C.

This is effected by delivering some ofthe steam from the pipe 7 to theejector E,

This is automatically accomplishedbyan.

arrangement of the character illustrated in Fig. 2 where represents thesteam supply pipe which communicates with a chest or chamber t havingthe steam outlets 'v and cc, of which the former conducts steam to theturbine T for driving the same and w delivers into the pipe 3*. Fig. 1,having a swing check valve y and connecting with the pipe in to theright of the check valve j.

Communication between the chest 1 and the outlets o and 'w is controlledby the valves a and a, Fig. :2. these valves being shown open andclosed, respectively, and cured upon the valve rods 11 and 0 connectedto the lever d pivotel at e and controlled by the fly ball or othergovernor G driven or rotated by the turbine T.

The operation is as follows:

Assuming the turbine T to be loaded, it. delivers suliicient exhauststeam through the pipe h, valve j and pipe In to the ejector E tomaintain the desired vacuum in the condenser C.

Should the load. upon the turbine T change, that is. should it forexample decrease, the governor will move the lever d inacountcrclockwise direction about its pivot 6, thereby decreasing theopening of the valve a to reduce the amount of steam to the turbine Tand opening the valve a thereby allowing steam from the pipe f to passthrough chamber t and through outlet in, pipe as and check valve 3/through pipe is to the ejector E which now receives sutlicient steam formaintaining the vacuum in the condenser C.

By this automatic action, when the supply of exhaust steam through thepipe it falls to or below a predetermined minimum steam from the pipewill be delivered to the ejector E either to make up for the decreasedamount of steam delivered thereto from the pipe )1. or entirelyreplacing the steam from pipe h by steam from tpe pipe ,f.

And in case the amoi nt of exhaust steam delivered from the turbine T tothe pipe h is greater than that which is necessary for the ejector E,the relief valve i will open and allow escape of any excess steam.

In Fig. 3 our automatic arrangement is shown in connection with a jetcondenser J having the usual water inlet 7" delivering through thenozzles 7 and having the inlet h for the steam to be condensed. Theejector IC is connected as shown. and the turbine T drives the submergedcentrifugal pump P for removing the condensate and cm densing watcr.Here again by a system of piping and valves and controls Similar tothose of Fig. 1. upon decrease of exhaust steam through the pipe ii to:or below a predetermined minimum. steam is delivered to the ejector Efrom pipe at.

What we claim is:

1. The combination with a chamber, of an ejector for producing a vacuumtherein, a

I plurality of sources of motive fluid for said ejector, and automaticmeans for opening communication between one of said-sources and saidejector upon decrease of motive lluid supplied by another of saidsources.

2. The combination with a chamber, of an ejector for producing a vacuum,therein, a source of exhaust steam for said ejector, a source of livesteam, and automatic means for opening communication between said sourceof live steam and said ejector upon change in supply of exhaust steam.

3. The combination with a condenser, of a condensate pump therefor. asteam motor for driving said pump, an ejector for withdrawing air or gasfrom said condenser, an exhaust steam connection from said motor to saidejector, and means responsive to change of load on said motor forconnecting said ejector to another source of steam.

l. The combination with a chamber, of an ejector for producing a vacuiuntherein, a steam motor, a pipe delivering steam exhausted from saidmotor to said ejector, a check valve in said pipe, a pipe extending fromanother source of steam connecting with said first named pipe at a pointbetween said check valve and said ejector, and means responsive tochange of load on said motor controlling supply of steam from saidsecond named source into said second named pipe.

5. The combination with a chamber, of an ejector for producing a vacuumtherein, a source of steam, a pipe connecting said source with saidejector, a check valve in said pipe. a pipe extending from anothersource of steam connecting with said first named pipe at a point betweensaid check valve and said ejector, and automatic means for controllingflow of steam from said,second named source into said second named pipe.

6. The combination with a chamber, of an ejectorfor producing a. vacuumtherein, a motor, a pipe deliverm steam exhausted from said motor toStilt ejector. 'a check valve in said pipe. a pipe extending fromanother source of steam connecting with said first named pipe at apoint, between said check valve and said ejector. means responsive tochange in load on said motor controlling How of steam from said secondnamed source into said second named pipe. and a relief valve for saidexhaust steam.

7. The combination with a chamber. of an ejector for producing a vacuumtherein. a source of exhaust steam, a pipe connecting said source withsaid cjcctor. a check valve in said pipe. a pipe extending from anothersource of steam connecting with said first named pipe at a point betweensaid check valve and said ejector, automatic means for admitting steamfrom said second named source into said second named pipe, and a.

relief valve for said exhaust steam.

8. The combination with a chamber, of an ejector for producing a vacuumtherein, a steam motor, a pipe delivering steam exhausted from saidmotorto said ejector, a check valve in said pipe, a pipe extending fromanother source of steam connecting with said first named pipe at a pointbetween said check valve and said ejector, means rein said pipe, a pipeextending from another source of steam connecting with aid first namedpipe at a point between said check valve and said ejector, automaticmeans for admitting steam from said second named source into said secondpipe, and a check valve in said second named pipe.

10. The combination with a chamber, of

an ejector for producing a vacuum therein, a steam motor, a pipedelivering steam exhausted from said motor to said ejector, a checkvalve in said 'pipe, a pipe extending from another source of steamconnecting pipe.

with said first named pipe at a point between said check valve and saidejector, means responsiveto change in load upon said motor forcontrolling flow of steam from said sec ond named source into saidsecond named pipe, a relief valve for said exhaust steam, and a checkvalve in said second named 11. The combination with a chamber, of anejector for producing a vacuum therein, a source of exhaust steam, apipe connecting said source with said ejector, a check valve in saidpipe, a pipe extending from another source of steam connecting with saidfirst named pipe at a. point between said check valve and said ejector,automatic means for admitting steam from said second named source intosaid secondnamed pipe, a relief valve for said exhaust steam, and acheck valve in said second named pipe.

12.-The combination with a chamber, of an ejector for producing a.vacuum therein, a steam motor, a governor therefor, an exhaust steamconnection from said motor to said ejector, and a connection from saidejector to a seoondsource of steam con- .trolled by said governor.

13. The combination with a chamber, of an ejector for producing a vacuumtherein, a steam motor,.a governor therefor, valves opened andclosedrespectively b said govrnor, one of said valves control ing admis- I!sion of steam to said motor, and another of said valves controllingadmission of steam to said ejector.

14. The combination with a chamber, of an ejector for producing a vacuumtherein, a steam motor, a governor therefor, valves opened and closedrespectively by said governor, one of said valves controlling admissionof steam to said motor, another of said valves controlling admission ofsteam to said ejector, and an exhaust steam connection from said motorto said ejector.

15. The combination with a condenser, of a cooling water pump therefor,a steam motor for driving said pump, an ejector 1 0 withdrawing air orgas from said condcm an exhaust steam connection from said our tor tosaid ejector, and means responsia c to change of load on said motor forconnectn.y-L} said ejector to another source of steam.

an ejector for producing a vacuum thercin, a source of motive fluid forsaid ejector. :1 motor, and means responsive to change oi load on saidmotor controlling connection between said ejectorand said source ofmotive fluid. w

17. The combination with a chamber, of an ejector for producing a vacuumtherein, a source of motive fluid, a motor, and a governor controllingsaid motor and a connection between said source of motive fluid and saidejector.

18. The combination with a condenser, of means for removing condensatetherefrom, an ejector for removing air or gas from said condenser, asource of motive fluid, and means responsive to variations in amount ofcondensate controlling a connection between said source of motive fluidand said ejector.

19. The combination with a condenser, of means delivering cooling waterthereto, an ejector for removing air or gas from said condenser, asource of motive fluid, and means responsive to changes in amount ofcoolin water delivered to said condenser contro ing connection betweensaid source of motive fluid and said ejector.

20. The combination with a condenser, of a cooling water pum therefor, asteam motor for driving sai pump, an ejector for withdrawing an or gasfrom said condenser,

an exhauststeam connection from said mo said pumps, an ejector forwithdrawing air.

or gas from said condenser, an exhaust steam connection from said motorto said ejector, and means responsive to change of load on said motorfor connecting said ejector to a second source of steam.

22. The combination with a condenser, of pumping means cooperatingtherewith, an ejector for removing air or gas therefrom, meansdelivering to said ejector steam Whose quantity, varies with the loadupon said pumping means, and automatic means causing increase of steamdelivery to said ejector upon decrease of the steam whose amount 10GOTTDANK L. KOTHNY. ROBERT SUCZEK.

li oples of this patent may be obtained for live cents each, byaddressing the Commissioner of Patents, Washington, D. 0.

